Re: [Texmacs-dev] [PATCH] solves GCC 3.2 auto_save segfault for me...

[Igor V. Kovalenko]

Joris van der Hoeven wrote:
> > Now I'm in a little confusion :)
> >
> > There are at least two possibilities:
> >    1. TeXmacs is affected by GCC/c++ PR 8287. I wrote this test exactly to show 
> > this :)
> >    2. There does exist some double-deletion of tree object.
>
>
> Hmmm, option 2 would not surprise me;
> it took me one week of debugging to find this bug in g++-3.0.
> It somehow disappeared from 3.1, but they seem to be uncautious enough
> to let it reappear in other major distributions. I think that this is
> [...]

Can you provide a test-case for double-deletion from g++-3.0 case era?

> > I'm now rebuilding with GCC-3.2 snapshot 20021104 (the latest available) and
> > will come up with the result.
>
>
> Thanks, it would be great to know whether hypothesis 2 is right...
> If you can find a systematic way of testing whether this bug has
> reappeared in g++, then that would even be better.

Well, my english is not enough compatible :) Are you talking about PR 8287
or suspected double-deletion of tree object?

I just researched GCC/c++ bug reports regarding destructors and I'm unable to
find a double-deletion case that is reported but not yet fixed as of 20021107 
CVS.

--
Regards,
Igor V. Kovalenko    mailto: iko at crec dot mipt dot ru